| Among the conducting polymers, polythiophene and its derivatives were frequently used as batteries, supercapacitors, catalyst, electronic device and biomedicine because of their resolvability, high conductivity, simplicity, environmental stability, as well as electrical and optical properties. The applications of inorganic nanomaterials as batteries, catalyst, ion exchange, adsorption and magnetics are acroused more and more attention due to their outstanding physicochemical property, such as volume effect, surface effect, quantum size effect and macroscopic quantum tunneling effect. In recent years, conducting polymer/inorganic nanomaterials become a hot topic because of nanocomposites can not only show the excellent electrical conductivity of conducting polymer, but also have physicochemical property of inorganic nanoparticle. At present, many reports have been published on the preparation of conducting polymer/inorganic nanomaterials, including sol–gel method, electrochemical polymerization, solid-state method, chemical oxidative polymerization, interfacial polymerization method and so on.In this paper, a series of nanocomposites were prepared by solid-state method, solution method and polymer redox method with polythiophene and its derivatives as organic phase, while the Mn O2、Sn O2 and GO as inorganic phase, respectively. In addition, the structure and morphology of nanocomposites were investigated by FTIR, UV, TEM, SEM, XRD, BET and EDX. The electrochemical performances and the catalytic activities of nanocomposites were deeply discussed. The main results are as follows:(1)The poly(3,4-propylenedioxythiophene)(PPro DOT) was prepared with the presence of nano-Mn O2 by using solid-state method. During the whole process, the Fe Cl3 acted as the oxidant and 3,4-propylenedioxythiophene(Pro DOT) played as a monomer, repectively. The effect of Mn O2 on the structure and electrochemical properties of PPro DOT were discussed. The results showed that nano-Mn O2 was not successfully incorporated in the PPro DOT matrix. However, compared to pure PPro DOT, PPro DOT had higher conjugation length and doped degree under the presence of Mn O2. In addition, PPro DOT showed specific capacitance of IV 215 F g-1 with the presence of Mn O2.(2)The poly(3,4-propylenedioxythiophene)(PPro DOT) was prepared by using solidstate method. During the whole process, the Fe Cl3 acted as the oxidant and 3,4-propylenedio xythiophene(Pro DOT) played as a monomer, repectively. Due to conducting polymers themselves show redox activity toward KMn O4, PPro DOT/Mn O2 composites with different content of Mn O2 were synthesized by polymer redox method. In addition, the electrochemical and adsorptive properties of the composites were deeply investigated. The results showed that PPro DOT/Mn O2 composites had higher electrochemical activity than pure PPro DOT, and PPro DOT/Mn O2(1:1) displayed excellent specific capacitance of 193 F g-1. The percentage removal of MB on PPro DOT/Mn O2 composites was higher than PPro DOT in the process of adsorption, and the adsorption efficiency of PPro DOT/Mn O2(1:2) composite finally reached 95% at 120 min.(3) The poly(3,4-ethylenedioxythiophene)(PEDOT) and PEDOT/GO were prepared by using solution method. During the whole process, the Fe Cl3· 6H2 O acted as the oxidant and 3,4-ethylenedioxythiophene(PEDOT) played as a monomer, repectively. PEDOT/Mn O2 and PEDOT/GO/Mn O2 composites were synthesized by polymer redox method, respectively. The structure and morphology of composites were characterized by FTIR, UV, SEM, XRD and EDX, respectively. The catalytic activities of composites were investigated through the degradation processes of methylene blue(MB) solution under dark, UV light and nature sunlight irradiation, respectively. The results showed that both of Mn O2 and GO had some effect on the structure and morphology of nanocomposites. Due to the synergetic effects between PEDOT and Mn O2 as well as GO, highest degradation ef?ciency of MB after 7h occurred in the PEDOT/GO/Mn O2 composite in three irradiation.(4) The PPro DOT and PPro DOT/Sn O2 nanocomposites with the contents of nano-Sn O2 varying from 10 wt% to 20 wt% were successfully prepared by using hand grinding and ball milling method, respectively. During the whole process, the Fe Cl3 acted as the oxidant, 3,4-propylenedioxythiophene(Pro DOT) played as a monomer and Sn O2 as inorganic phase, repectively. The effects of the synthetic methods and Sn O2 on the structure and electrochemical properties of the nanocomposites were deeply discussed. The results showed that the PPro DOT/Sn O2(HG) nanocomposites from hand grinding method had higher specific capacitances than that of PPro DOT/Sn O2(BM) nanocomposites from ball milling method, and PPro DOT/15wt%Sn O2(HG) possessed the highest specific capacitance of 259 F g-1.(5)The poly(3’,4’-propylenedioxy-2,2’:5’,2 "-terthiophene)(poly(TPT)) and poly(TPT) /Sn O2 nanocomposites were prepared by solid-state method with the Fe Cl3 as oxidant, 3’,4’-propylenedioxy-2,2’:5’,2"-terthiophene(TPT) as monomer and Sn O2 as inorganic phase, respectively. In addition, the structure, morphology and electrochemical properties of composites were deeply discussed. The results showed that the strong interaction between polymer and Sn O2 was occurred in the nanocomposite. Compared to pure poly(TPT), poly(TPT)/Sn O2 nanocomposite had higher specific capacitances(188 F g-1). |
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